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Whirligig Roller Reamers
 
Description:
 
Whirligig Roller Reamers offer a low torque solution to borehole gauge maintenance. By lowering torque and drag, stick slip and BHA vibration, drilling efficiencies can be greatly improved, resulting in significantly lower cost per foot drilling. Improved weight transfer and lower vibration and extended life of the bit and motor. There is less wear on the tool less damage to the hole wall formation and lower torque as compared to traditional fixed blade reamers and stabilizers with a rotating element cutting action.
By conditioning the wellbore mechanically, removing tight spots, formations ledges, micro doglegs and spiraling, a smoother wellbore wall profile will aid in the drilling, logging, coring and casing processes of well construction. By allowing longer runs in complex ERD well, lowering the incidents of stuck pipe, significantly reducing trip times, improved bit and coring performance, easier wire line logging, and faster running of casing or liner strings.
 
Features:
 
1. Secure Cutter Retention
Two methods of retention are required for reliably holding the rolling cutters in place.
-Static retention of the cutters into the tool body with an innovative dual wedge block system, locking the cutters securely into the body in both the axial and radial directions.
-Dynamic retention of the rolling cutters onto the bearing shaft with oversize anti-friction ball bearing system, which is fully internal to the bearing package. No load bearing elements outside of the seal system generating heat and shortening the life of the seal.
 2. Pressure Compensated - Pressure Relieved Lubrication System
It feature an integral pressure compensation system, a large volume grease reservoir and an internal pressure relief valve. With strategically placed lubrication passageways, this system ensures adequate bearing lubrication over an extended run time, even in highest downhole pressure environments, without seal damage or leakage from differential pressures.
 3. Advanced Technology Seal and Bearing Package
Large diameter O-ring seals, labyrinth seal protector, floating silver plated high strength alloy bushings and specially formulated synthetic grease. Optional mechanical face seal where high rpm and high bottom hole temperatures.
 
 
 
 
 
Benefits:
 1. Reduces BHA torque and stick slip compared to conventional stabilizers
 2. Efficiently eliminates ledges, hole tortuosity and micro doglegs
 3. Compacts mud filter cake versus scraping
 4. Back reams more efficiently than stabilizers or drill bits
 5. Replaces conventional fixed blade stabilizers and reamers
 
Specification:
 

Hole size	Body OD (in)	Body ID (in)	Fishing Nick Length  (in)	Fishing Neck Diameter (in)	Overall Length(in)	Dressed Body Weight  (Ibs)
5 7/8-6 1/2	4 3/4	1 1/4-1 3/4	40	4 3/4	80	225-250
7 7/8-8 3/4	6 1/2	2 1/4	45	6 1/2	95	450-575
9 7/8	6 1/2-8	2 13/16	50	6 1/2-8	110	775
11	8	2 13/16	55	8	125	1000
12 1/8-12 1/4	8 or 9 1/2	1 23/16	60	8-9 1/2	130	1250
14 3/4 to 26	9 1/2	2 13/16	70	9 1/2	150	1800-4000

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PDC REAMER
 
Reduces drilling NPT and gives you a clean path to completion
 
Drilling highly reactive, unconsolidated, inter-bedded and similarly troublesome zones, especially with tortuous extended reach well paths, all-too-often induces non-productive time (NPT) to deal with stuck pipe and other wellbore instability issues. Project costs are further aggravated when post-drilling reaming runs are required to minimize tortuosity and condition the wellbore for the completion and production hardware.
 
 
 
Benefits:
 
• Minimal NPT while drilling and tripping
• Faster drilling rates with lower torque and drag than conventional tools
• Enhanced wellbore stability
• Reduced costs
• Elimination of dedicated reaming trips
• Unimpaired MWD/LWD logs
• Increased durability for longer runs
• Effective reaming without the need for conventional and often obstructive stabilizers
• A smooth and ready-for-completion wellbore
 
Main sizes we can machine:
 
6” PDC Reamer
8 3/8” PDC Reamer
8 3/8” NM PDC Reamer
12 1/8” PDC Reamer
15 6/8” PDC Reamer
16” PDC Reamer
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Fixed diameter hole opener
 
Features & Benefits:
The KINGWELL fixed diameter hole opener is a general hole enlarging tool. It is used to enlarge hole during drilling and connected with a bit on front end to drill pilot hole and enlarge hole simultaneously.
The cutters can replace according to the different hardness of formation
 
Technical Data:

Type	Hole open dia.(in)	Qty of cutter	Min. pilot hole(in)	Fishing neck dia.(in)	I.D(in)	Top Conn. (pin)	Bottom Conn.(box)	Overall length(in)
KW 311	12 1/4	3	8 1/2	8	1 1/2	6 5/8REG	6 5/8REG	55
KW 406	16	3	10	9 1/2	2 1/4	7 5/8REG	7 5/8REG	59
KW 444	17 1/2	3	10	9 1/2	2 1/4	7 5/8REG	7 5/8REG	59
KW 559	22	3	12 3/4	9 1/2	2 1/3	7 5/8REG	7 5/8REG	69
KW 584	23	3	12 3/4	8	3	6 5/8REG	6 5/8REG	69
KW 610	24	3	14	10	3	7 5/8REG	7 5/8REG	69
KW 660	26	3	17 1/2	10	3	7 5/8REG	7 5/8REG	69
KW 4-914	36	4	26	10	3 1/2	7 5/8REG	7 5/8REG	87

 

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Hydraulically activated blade under reamer
 
Hydraulic drag type under reamer, enlarge the hole below the casing, rubber piston cup is designed for fluid or air drilling. It is a kind of high-efficient hydraulic under reamer specially designed for enlarging the borehole below casing in the oil/gas wells. With the pilot shoe, it can be used for reaming after drilling. Also, with the drill bit, it can be used for reaming while drilling. The primary uses for this type of tool is to provide clearance for running casing, to obtain adequate annular space for cementing, to enlarge zones for gravel pack completion or tie back anchor holes.
Recommended for use in sand, dirt, clay, sand rock, sandstone, and hard shale formations.
Features:
1. Applied hydraulic pressure acts on the internal piston and moves blades open to ream the hole. 
2. Applied blades with special triangle structure to enhance the reaming efficiency.
3. It comes with 3 large-section cutting arms, each fitted with two rows of Polycrystalline Diamond Compacts for maximum reaming.
4. Applied high strength alloy steel to make the body of the reamer for reaming in the deep to ultradeep well.

Applications:
1. Realize the reduced clearance casing programs (RCCPS) to reduce the drilling cost.
2. Solve the complex problems caused by creepage of salt-gypsum layer via reaming out the salt-gypsum section.
3. Increase the thickness of the cement mantle between the casing and the hole in the small hole to improve the cement job quality.
We can supply all sizes of hydraulic under reamers according to the requirements.
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Integrity Under reamer
Description:
Underreamer is a simple and reliable solution to the drilling inefficiencies and out-of-gauge wellbores that can increase hole enlargement costs exponentially. Whether enlarging an existing wellbore or reaming-while-drilling new hole, the tools delivers the utmost in durability regardless of the formation or operating parameters. This versatile tool comprises a single-piece body engineered to ensure a robust low-mass design. This concentric symmetric mass-balanced design provides optimum hole opening ratios up to 25%, with increased flows around the tool for enhanced hole cleaning and reduced downhole vibration.
Features:
- Suitable for all formations
- Straightforward shgie-body design
- Application-spectfic Trident POC cutter blocks
- Superior mechanical force advantage
- Adjustable jet nozzles with integrated flow paths
- Hydraulic activation through ball drop or controlled pressure drop
- Concentric symmetric mass-balanced design
- Track feed design for securing and deploying cutters
- Bi-directionai capability
- Cutter deployment independent of BHA weight, formation strength and operating   parameters.
Benefits:
- Enlarges hole while drilling in single run
- Ensures smooth engagement for consistent full-gauge wellbore
- Provides high stress tolerance and maximum durability
- Reduces drill string vibration
- Improves drilling efficiency, BHA stabilization
- Promotes full or low flow through BHA
- Enhances hole cleaning
- Optimizes hole opening ratios of up to 25%
- Promotes operational simplicity, reliability
- Reduces non-productive time (NPT) and costs
 
Specification:
Operating recommendation: US Units  SI Units
Minimal pilot hole size:  8.375 Inch 212.7mm
Minimal collapsed diameter: 8.25Inch 209.6 mm
Maximum recommended operating Row: 760 gpm 2880 Ipm
Maximum drilling torque: 18.4 kft-Ib 25kNm
Make-up torque tool subs: 38.2-42.0 kft-Ib 51.7-56.9 kNm
Minimum operating pressure: 610 psi 4.2 Mpa
Maximum operating pressure :2900 psi 20Mpa
Maximum operating temperature: 356 F 180C
Maximum hydrostatic pressure: No limitation

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Multi-cycle Bypass Valve
1. Structure composition
Multi-cycle is the novel cycle joint that can achieve the unrestricted free conversion between the outside circulation and the normal circulation. Mainly consists of three parts: the shell, the valve element and the spring.   
 
2. operating principle
After pitching, the Bypass Valve change the pumping pressure to switch cycle channel and then complete different process tasks
                              
 
1.Normal cycle status    2.bypass cycle status       3.After pitching, using the pumping pressure to shear the non-metallic ball and then return to normal cycle
3. Features/Advantage
 
1). Pitch number：3 pcs
2). Pitch size：can choose according to need
3). The method of cycle conversion for start-up tool: when pitch entered into valve seat,stop pump 30 ~ 90s and start the pump circulation then can start the operation.
4). Pressure range of the circulation mode switching: 1.4MPa～5.6MPa
5). Circulation mode：unrestricted free conversion
6). Special tailor-made：can customize the type of valve core for through logging cable and other cable tool
 
4. Work effect
1). Save the drilling cycle. Pitch conduct plugging operation when leakage of well and the pitch is plugging operations. After plugging, the tool shear pitches and switch to the normal circulation patterns then do normal drilling operation. It save the drilling cycle.
2). Have multiple switch function, can achieve the unrestricted free conversion between the outside circulation and the normal circulation.
3). Open threshold displacement can be selected according to the actual situation.
 
5. The application range
Well leakage
Well repair/well completion
Horizontal well drilling
Acidification and increase production in horizontal wells
Special coring service
Under balanced drilling
The center position of drill string to improve cycle efficiency

 
6. Specification
 

Model	KW121	KW165	KW203
Tool OD (in.)	43/4＂(121mm)	61/2＂(165mm)	8＂(203mm)
Tool ID (in.))	11/4＂(31.75mm)	2＂(50mm)	2.36＂(60mm)
Tool length (mm)	1100	1200	1300
Tensile load Max.(kN)	2200	5500	7920
Flow rate Max. (L/s)	23	47	65
Flow rate Min. (L/s)	11	23	35
Torsional load Min. (kN·m)	40	68	150
Flow area before the pitch (mm2)	1256	1750	3316.6
Flow area of outside cycle(mm2)	615.4	780	1775.9
Flow area of normal cycle(mm2)	632.5	1260	1358.3
Temperature rating (℃)	150	150	150
Under pressure Max.(MPa)	35	35	35
Pitch diameter (mm)	36、38、40	55、57.5、60	62、63、65
Tool pressure drop in pre start time (rinsing) (MPa)	0.4 (18L/s)	0.6 (28L/s)	0.7 (63 L/s)

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  Anti abrasion joint series

All Metal Down Hole Hydraulic Oscillator Series

1.Introduction of Hydraulic Oscillator 

 

A hydraulic oscillator is used to solve the bottom hole pressure, Improve drilling and pressure transmission. Particularly suitable for use in horizontal wells, large displacement wells. It can be used at the same time as MWD, down hole power drill and any drill bit.

Our hydraulic oscillator includes power components, are all metal material, tool body parts without rubber components, widely used in various drilling conditions, in conventional tools to work well at high temperature, oil base mud, saline formations such as conditions can be completely normal use.

 

2. Introduction of Structure

 

 

3. Specification

Specification 6-7/8" OD

Applicable Displacement 20 l/min  -   37 l/min

Total Length 3.2m

Working Frequency 11-13 Hz@600-800

MAX Operating Temperature Basically no limit

Connecting Thread NC50

Shock Force 32-42KN

Amplitude 3-15mm

Note: the operating frequency and vibration amplitude can be adjusted according to the customer's needs.

4. Performance comparison

Main points of contrast All Metal Down Hole Hydraulic Oscillator mental face Others Others

Power source All metal unit Screw

Tool Length 3.2m    ＞7m

Rubber components no Have

Special conditions such as high temperature and high pressure oil Basically no limit Effect life is affected or even can not be used

pressure drop low  （About 1 - 1.5 pcs Mpa） High    （3-4Mpa)

 

 

5.Feature

 

A) All metal material

B) The length is 3.2m, others are over 7m. Our tools are easy to wellhead loading and unloading, testing, transportation, etc.

C) No rubber and other parts easy to fall off

D) In high temperature and high pressure, salt water base wells, our tools have obvious advantages.

E) Reduction of working pressure.

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Hydraulic Impactor series
1. Structure
Form of Upper and lower joints, power parts, screw lifting mechanism, impact actuator.
Structure diagram
2. Feature
 
1. Can provide continuous high frequency impact, improve the efficiency of rock breaking.
2. It is conducive to the elimination of stick slip phenomenon.
3. It can avoid or reduce the generation of cable-system drill and drilling jumping, and prolong the service life of the drill bit.
4. To meet the underground high temperature, high pressure, tension, compression, torsion and other complex conditions, to ensure the safety of underground.
5. Tool has no additional requirements for drilling operation parameters. If the tool stops working, it can still be in normal drilling.

Type	Well Hole Size（mm）	Impactor OD (mm)	Tool Length (m)	Connecting Thread Number	Mud Displacement　 (L/S)	Tool Pressure Drop　 (Mpa)	Impact Force　 (t)		Impact frequency (times/min)
							Vertical	Radial
YI185	215.9	185	2.8~2.9	4 1/2REG	20~30	1.5~2.5	0.9~2.2	0.3~0.6	600~1000
YI203	241.3	203	2.8~2.9	6 5/8REG	22~35	1.6~2.7	0.9~2.5	0.3-0.6	600~1000
YI240	311.1	240	3.1~3.2	6 5/8REG	50~60	2.0~3.0	2.0~3.5	0.3~0.6	600~1000